// Copyright (c) 2012-2014 Sharpex2D - Kevin Scholz (ThuCommix)
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Collections.Generic;
using System.Linq;

namespace Sharpex2D.GameService
{
    [Developer("ThuCommix", "developer@sharpex2d.de")]
    [TestState(TestState.Tested)]
    public class GameServiceContainer
    {
        private readonly List<IGameService> _gameServices;

        /// <summary>
        /// Initializes a new GameServiceContainer class.
        /// </summary>
        public GameServiceContainer()
        {
            _gameServices = new List<IGameService>();
        }

        /// <summary>
        /// Adds a new GameService.
        /// </summary>
        /// <param name="service">The GameService.</param>
        public void Add(IGameService service)
        {
            if (!_gameServices.Contains(service))
            {
                _gameServices.Add(service);
            }
        }

        /// <summary>
        /// Removes a GameService.
        /// </summary>
        /// <param name="service">The GameService.</param>
        public void Remove(IGameService service)
        {
            if (_gameServices.Contains(service))
            {
                _gameServices.Remove(service);
            }
        }

        /// <summary>
        /// Gets the Service.
        /// </summary>
        /// <typeparam name="T">The Type.</typeparam>
        /// <returns>T.</returns>
        public T GetService<T>()
        {
            foreach (IGameService service in _gameServices.Where(service => service.GetType() == typeof (T)))
            {
                return (T) service;
            }

            throw new InvalidOperationException(typeof (T).FullName + " is not an available game service.");
        }
    }
}